Sewing machine



FIG. 1 is a left side perspective view of a sewing machine showing my new design;

FIG. 2 is a right side perspective view thereof;

FIG. 3 is a front elevational view thereof;

FIG. 4 is a rear elevational view thereof;

FIG. 5 is a top plan view thereof;

FIG. 6 is a bottom plan view thereof;

FIG. 7 is a left side elevational view thereof;

FIG. 8 is a right side elevational view thereof;

FIG. 9 is a cross-sectional view taken along line 9--9 of FIG. 3 thereof; and

FIG. 10 is a cross-sectional view taken along line 10--10 of FIG. 3 thereof. 

The ornamental design for a sewing machine, substantially as shown and described. 